<template>
  <div class="app-container">
    课程列表

    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
          <el-option value="Normal" label="已发布"/>
          <el-option value="Draft" label="未发布"/>
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" />

      <el-table-column label="课程状态" width="80">
        <template slot-scope="scope">
          {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数" width="100"/>

      <el-table-column prop="gmtCreate" label="添加时间" width="180"/>

      <el-table-column prop="viewCount" label="浏览数量" width="70" />

      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <router-link :to="'/teacher/edit/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
          </router-link>
          <router-link :to="'/teacher/edit/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲息</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程信息</el-button>
        </template>
      </el-table-column>
    </el-table>

  <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />

  </div>
</template>
<script>
//引入调用teacher.js文件
import course from '@/api/edu/course'

export default {
    //写核心代码位置
    // data:{
    // },
    data() { //定义变量和初始值
        return {
          list:null,//查询之后接口返回集合
          page:1,//当前页
          limit:10,//每页记录数
          total:0,//总记录数
          courseQuery:{} //条件封装对象
        }
    },
    created() { //页面渲染之前执行，一般调用methods定义的方法
        //调用
        this.getList() 
    },
    methods:{
      getList(page = 1){
        this.page = page
        course.pageCourseCondition(this.page,this.limit,this.courseQuery)
            .then(response =>{
                this.list = response.data.rows
                this.total = response.data.total
            }) //请求成功
            .catch(error => {
              console.log(error)
            }) //请求失败
      },
      removeDataById(id) {
        this.$confirm('此操作将永久删除课程, 是否继续?', '提示', {
              confirmButtonText: '确定',
              cancelButtonText: '取消',
              type: 'warning'
          }).then(() => {//点击确定，删除成功
              //调用删除方法
              course.deleteCourse(id)
              .then(response => {//删除成功
                  //提示信息
                  this.$message({
                  type: 'success',
                  message: '删除课程成功!'
                  });
                  //刷新页面
                  this.getList()
              }) 
          })//点击取消，删除失败
      },
      //课程列表的方法
      // getList() {
      //     course.getListCourse()
      //         .then(response =>{//请求成功
      //             //response接口返回的数据
      //             this.list = response.data.list
      //         }) 
      // },
      resetData() {//清空的方法
          //表单输入项数据清空
          this.courseQuery = {}
          //查询所有课程数据
          this.getList()
      }
 
  }
}
</script>
